10 



by M. D'Orbigny is, that the throat and chest of the latter are 

 brownish black, while the šame parts in this bird are white. 

 Hab. Santa Cruz. 



BuTEO VARIUS. But. vertice corporegtie siipra i>ifensėfuscis,plur- 

 misfulvo viarginatis vel guttatis ; primariis seco/idariisque ci- 

 nereis, lineis fuscis frequentibus transversim sfriatis ; cattdd ci- 

 jicred, liiieis angustis et frequentibus fuscis trajisversim notatd; 

 singulis plumis fiavescenti aJbo ad apicem notatis ; guldfuligi- 

 7iosd ; pectore fulvo lined interruptd tiigrescente circumdatd a 

 guld tendente; ahdomine imo lateribusque stramineo et rvfescenti- 

 fusco variegatis ; femoribus crissoque stramineislineistrcmsversa- 

 libus anfractis rtifescenti-fusco omatis ; rostro nigro ; cerd tar- 

 sisque olivaceis. 



Long. tot. 2I5 ; ala, \&\. 



Obs. llie fine individual above described was the only example of 

 the species contained in Mr. Darwin's collection ; and it is evidently 

 in a State of change from youth to maturity. 



Hab. Santa Cruz. 



Ciacus MEGASPILŪ8. CiTC. vertice corporeque supra intense fus- 

 cis, lined stramined a naribus supra oculos ad occiput tendente ; 

 hoc rufescenti-fnsco, primariis intense fuscis ad basin cinereis, 

 lineis nigris cancellatis ; tectricibus cauda. albis ; rectricibus in- 

 tennediis cinereis externis cinereo-stramineis ; omnibus lineis 

 latis fuscis tiansversim notatis ; lined ultimd latisimd apicesor- 

 dide stramineo ; gula et pectore stranmieis, fusco sparsis ; cor- 

 pore si(btus stramineo ; plumis pectoris et laterum strid centrali 

 fusco notatis ; rostro nigro ; cerd tarsisqv£ Jlavis. 



Long. tot. 21 unc. ; rostri, I5 ; ala, 17; caudce, 10^; tarsi, 3^. 



BuTEO vENTKALis. Sut. vcrticc corporeqiie intense et 7iitide-fus- 

 cis, plumis dorsalibus purpurescentibus ; primariis nigris ; 

 caudd fuscd lineis frequentibiis obscuriorihus, cancellatd ad 

 apicem sordide albd ; gidd abdornine 7nedio crissoqu€ stramineo 

 albis į lateribus pectoris corporisque fascidque abdominali nec- 

 non femoribus flavescente-albis fusco notatis, notis in femoribus 

 iiifescentibus ; tarsis per niediam partem antice pluTtiosis, 

 Tostro nigro ; cerd tarsisquc flavis. 



Long. tot. 21į unc. ; al(E, \b\ ; rostri, 9į ; tarsi, ?>\. 



Otūs (Brachj'otus) galapagoensis. Ot. fascid circa ocidos fu- 

 Uginosd ; strigd superciliari plumis tiares tangentibus et circa 

 angulum oris, guld et disci fascialis margine albis ; vertice cor- 

 poreque supra inte.nse stramineo fuscoque variegatis ; primariis 

 intense fuscis ad apicem, stramineo fasciatis ad basin ; coipore 

 subtus stramineo notis irregularibus fasciisque fuscis omato ; 

 fetnoribus tarsisque plumosis rufescenti-stramineis ; rostro et 

 unguibus nigris. 



Long. tot. 13į; rostri, 1 ; alce, 11 ; caudcc, 6 ; tarsi, 2. 



Obs. ITiis species belongs to that section of the homed owls which 



